Compare the volume of a square pyramid to the volume of a square prism with the same base and height as the pyramid.

The Volume of the square pyramid is 1/3 the volume of a square prism with the same base and height

Step-by-step explanation:

The volume of a square pyramid is given by the formula

V = 1/3 s^2 h

where s is the side length of the base

The volume of a square prism given by the formula

V =  s^2 h

where s is the side length of the base

So dividing the two, taking the pyramid on top

1/3 s^2 h

 s^2 h

If the bases are the same, then the side lengths are the same and we know the heights are the same.  We will cancel them from the top and the bottom.

1/3

1

The Volume of the square pyramid is 1/3 the volume of a square prism with the same base and height

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer

the value of x is 9 ⇒ answer b

step-by-step explanation:

* we can solve this problem using cosine and sine rule

- in δ abc

∵ ab = 36 , bc = 28 , ac = 16

- lets find the measure of angle b using the cosine rule

∵ cos b = [ab² + bc² - ac²]/2(ab)(bc)

∴ cos b = [36² + 28² - 16²]/2(36)(28)

∴ cos b = 19/21

∴ m∠b = cos^-1(19/21) ≅ 25°

- lets find the measure of angle a using the sine rule

∵ sina/bc = sinb/ac = sinc/ab

∴ sina/28 = sin25°/16 ⇒ by using cross multiplication

∴ sina = 28 × sin25°/16

∴ sina = 0.7396

∴ m∠a = sin^-1(0.7396) ≅ 48°

- from the figure m∠abd = m∠dbc

∵ m∠abc = 25°

∴ m∠abd = 25°/2 = 12.5°

- in δabd

∵ m∠a = 48° , m∠abd = 12.5°

∵ the sum of the measures of the interior angles of any δ is 180°

∴ m∠adb = 180° - (48° + 12.5°) = 119.5°

∵ ab = 36

∵ ad = x

- use the sine rule to find x

∵ sin∠adb/ab = sin∠abd/x

∴ sin119.5°/36 = sin12.5°/x ⇒ by using cross multiplication

∴ x = 36 × sin12.5°/sin119.5° = 8.95 ≅ 9

* the value of x is 9